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Biomedical subjects

L O Bygren

Publications and source records attributed to L O Bygren.

At least 19 recordsLinked to original sources
PubMed2005

Large social disparities in spontaneous preterm birth rates in transitional Russia.

OBJECTIVE: This study estimated the effect of maternal sociodemographic, obstetric and lifestyle factors on the risk of spontaneous preterm birth in a Russian town. METHODS: All women with singleton pregnancies registered at prenatal care centres in Severodvinsk in 1999 comprised the cohort for this study (n=1559). Analysis was based on spontaneous live singleton births at the maternity home (n=1103). Multivariable logistic regression was applied to quantify the effect of the studied factors on the risk of preterm birth. Differences in gestation duration were studied using multiple linear regression. RESULTS: In total, 5.6% of all spontaneous births were preterm. Increased risks of preterm delivery were found in women with lower levels of education and in students. Placental complications, stress and a history of fetal death in previous pregnancies were also associated with elevated risks for preterm delivery. Smoking, hypertension and multigravidity were associated with reduced length of pregnancy in metric form. CONCLUSION: In addition to medical risk factors, social factors are important determinants of preterm birth in transitional Russia. Large disparities in preterm birth rates may reflect the level of inequalities in transitional Russia. Social variations in pregnancy outcomes should be monitored.

Adolescent↗
PubMed2002

Cardiovascular and diabetes mortality determined by nutrition during parents' and grandparents' slow growth period.

Overfeeding and overeating in families are traditions that are often transferred from generation to generation. Irrespective of these family traditions, food availability might lead to overfeeding, in its turn leading to metabolic adaptations. Apart from selection, could these adaptations to the social environment have transgenerational effects? This study will attempt to answer the following question: Can overeating during a child's slow growth period (SGP), before their prepubertal peak in growth velocity influence descendants' risk of death from cardiovascular disease and diabetes? Data were collected by following three cohorts born in 1890, 1905 and 1920 in Overkalix parish in northern Sweden up until death or 1995. The parents' or grandparents' access to food during their SGP was determined by referring to historical data on harvests and food prices, records of local community meetings and general historical facts. If food was not readily available during the father's slow growth period, then cardiovascular disease mortality of the proband was low. Diabetes mortality increased if the paternal grandfather was exposed to a surfeit of food during his slow growth period. (Odds Ratio 4.1, 95% confidence interval 1.33-12.93, P=0.01). Selection bias seemed to be unlikely. A nutrition-linked mechanism through the male line seems to have influenced the risk for cardiovascular and diabetes mellitus mortality.

Cardiovascular Diseases↗
PubMed2001

Patients attachment patterns and response to a program for alleviating cardiovascular risk factors: a 1-year follow-up of patients in a patient education program.

This study was a 1-year follow-up of 295 consecutive patients at a patient education centre and assessed how attachment style influenced the outcome of the patient education program devised for individuals with multiple risk factors for cardiovascular disease. The program consisted of a 4-week residential program course, followed by a 4-day follow-up course a year later. In our cohort study, the 295 consecutive patients (mean age = 52years, S.D.=9.2) with multiple risk factors for cardiovascular disease, showed an initial overall reduction of 4.4 kg in weight (P=0.0001) and a reduction of 17/11 mm in systolic and diastolic blood pressure (P=0.0001 and 0.0001). The weight remained essentially the same at the follow-up 1 year later, whereas blood pressure tended to return to previous level. The attachment style was determined by means of a questionnaire: 87% were classified as 'secure', 9% 'avoidant' and 5% as 'ambivalent'. After 4 weeks, the ambivalent category had reduced weight (body mass index (BMI)) more than the secure group (P=0.04). At the 1-year follow-up, the avoidant category showed a more pronounced reduction in diastolic blood pressure than the other groups (P=0.001). Thus, it seems as if attachment style does have some influence on outcome. Patient education should take advantage of knowing patients' attachment style.

Cardiovascular Diseases↗
PubMed2001

Longevity determined by paternal ancestors' nutrition during their slow growth period.

Social circumstances often impinge on later generations in a socio-economic manner, giving children an uneven start in life. Overfeeding and overeating might not be an exception. The pathways might be complex but one direct mechanism could be genomic imprinting and loss of imprinting. An intergenerational "feedforward" control loop has been proposed, that links grandparental nutrition with the grandchild's growth. The mechanism has been speculated to be a specific response, e.g. to their nutritional state, directly modifying the setting of the gametic imprint on one or more genes. This study raises the question: Can overnutrition during a child's slow growth period trigger such direct mechanisms and partly determine mortality? Data were collected by following-up a cohort born in 1905 in Overkalix parish, northernmost Sweden. The probands were characterised by their parents' or grandparents' access to food during their own slow growth period. Availability of food in the area was defined by referring to historical data on harvests and food prices, records of local community meetings and general historical facts. If there was a surfeit of food in the environment when the paternal grandfather was a 9-12 year old boy a shortening of the proband survival could be demonstrated. The influence of parents', maternal grandparents' and paternal grandmothers' access to food during their slow growth period was discounted in a multivariable analysis. The results are indicative of very early programming mechanisms in human adaptation to the social environment.

Adolescent↗
PubMed2001

Hypophosphataemia in the metabolic syndrome. Gender differences in body weight and blood glucose.

OBJECTIVE: We examined gender differences in the clustering of risk factors, especially regarding the possible role of serum phosphate (S-P) in obese patients who participated in a 4 week education programme to reduce their excess risk of cardiovascular disease (CVD). RESULTS: Significantly higher body mass index (BMI) and concentrations of S-P and high density lipids (S-HDL) in serum were found in women (n=1272) than in men (n=993). In women, BMI was inversely correlated with S-P at the time of admission. Also in women (but not in men), changes in BMI and S-P over 1 or 1-1/2 y were inversely correlated. In men (but not in women), S-P level was inversely correlated with age, systolic blood pressure (SBP), diastolic blood pressure (DBP) and blood glucose at the time of admission. In women, S-P increased and DBP decreased, in addition to weight decrease over both 6 months and 1(1/2) y or 1 y. In women (but not in men), significantly higher age, S-P, S-chol, S-TG, S-urate, SBP and DBP values were found with the highest vs the lowest decile of S-Ca. CONCLUSION: We conclude that higher S-P and S-Ca levels may contribute to the difference in metabolic disturbances occurring in obesity, seen in women vs men.

Blood Glucose↗
PubMed2001

Sustaining habits of attending cultural events and maintenance of health: a longitudinal study.

The purpose of this study was to assess how changes in the habit of attending cultural events in the community might predict self-reported health. This study made use of data based on two interviews, 8 years apart, with 3793 adults aged 25-74 years from a simple random sample of the Swedish population. The subjects were interviewed in 1982-1983 and re-interviewed using the same questionnaire in 1990-1991. The setting was a Swedish interview survey of living conditions comprising a random sample of the adult population. Self-reported health status was the main outcome measure. The variables used for control purposes were baseline health status according to the survey of 1982-1983, age (at baseline), type of residence, geographical region of domicile, and socio-economic status (level of education). A correlation was found between perceived poor health and all the independent variables, as well as an influence in the expected direction for all of them; poor education, increasing age and a low degree of urbanization all predicted poorer perceived health. In the full model (including all nine independent variables), those who became culturally less active between the first and second occasion, or those who were culturally inactive on both occasions, ran a 65% excess risk of impaired perceived health compared with those who were culturally active on both occasions. Furthermore, those who changed from being culturally less active to being more active had about the same level of perceived risk as those active on both occasions. These results could be in agreement with a causal influence of stimulation and suggest that cultural stimulation is a 'perishable commodity'. While recruiting new consumers would in that case promote health, continued frequent replenishment of the cultural stimulation may be just as important.

Adult↗
PubMed2001

The effects of alcohol consumption on mortality and morbidity: a 26-year follow-up study.

OBJECTIVE: To investigate the long-term effects of the consumption of alcohol on mortality and morbidity. METHOD: A sample of 32,185 (50.5% female) individuals was randomly selected from the 450,000 inhabitants of Stockholm County, Sweden, in 1969. Alcohol consumption data were obtained from postal questionnaires; response rate was 87% (n = 28,001). Data on mortality and morbidity were obtained from the National Cause of Death Register, the Cancer Register and the Inpatient Register 1971-1996. RESULTS: The reference groups were moderate consumers of alcoholic beverages. High-consumption men had increased risks of mortality from cardiovascular diseases (relative risk ratio [RR] = 1.28; 95% confidence interval [CI]: 1.12-1.46), accidents or poisoning (RR = 2.10; CI: 1.67-2.65) and gastrointestinal diseases (RR = 4.65; CI: 2.93-7.36). High-consumption women had an increased risk of mortality only from accidents or poisoning (RR = 2.95; CI: 1.82-4.78) and gastrointestinal diseases (RR = 3.60; CI: 1.40-9.24). For low-consumption women, there was an increased risk of mortality from cardiovascular diseases (RR = 1.25; CI: 1.07-1.47). Low-consumption men also had an increased mortality from cardiovascular diseases (RR = 1.23; CI: 1.05-1.44). The results with respect to morbidity almost mirrored the results for mortality, with one exception; for low-consumption men, the morbidity from cardiovascular diseases was not increased. CONCLUSIONS: The mortality and morbidity associated with different levels of alcohol consumption are associated with the same diseases, which suggests that alcohol may be one of the causative factors for these diseases. The reasons for the differences between genders, regarding responses to the negative effects of alcohol consumption, are still unknown.

Adolescent↗
PubMed2001

Egalitarian aspects of medical and social services.

Unmet needs for medical and social services are present in all socioeconomic strata, but workers and poor people suffer most. Satisfaction of the needs of these groups could help to narrow the differences in health and survival between social classes. As needs for services change with the historical period, age, and changing attitudes to help-seeking in younger generations, we require cohort studies of needs measured directly in random samples of the population. Cohort analyses could form the basis for future plans to provide services equitably.

Health Care Rationing↗
PubMed2000

Inpatient care quality: analyzing Swedish hospitals with stroke as a tracer.

Mortality statistics are an important source of information concerning variations in time and place, identification of risk factors and the evaluation of treatment programs. In this study, a new death certificate was completed "blind" on the basis of hospital records from the last episode of care, across a random sample of 1,376 cases. The results showed that the overlap between the official register's underlying cause of death and that of a panel was 72 per cent at the three-digit level. The official underlying cause of death from cerebrovascular diseases (CVD) was 72 cases in this sample, while 93 were deemed to have CVD by a panel. Additionally, of the 1,233 cases originally reported as non-CVD, the panel deemed non-CVD to be the true underlying cause in 1,176 cases. The paper concludes that CVD was most often correctly reported as the underlying cause of death in the investigated ages up to 75 years but plain differences were found between specialities and in different hospital size.

Abstracting and Indexing↗
PubMed2000

A moderate intake of wine is associated with reduced total mortality and reduced mortality from cardiovascular disease.

OBJECTIVE: The aim of this study was to investigate the effects of the consumption of wine, beer and distilled spirits on total mortality and on mortality from cardiovascular disease. METHOD: The consumption of wine, beer and distilled spirits was assessed in 1,828 individuals by a psychiatrist. Subjects were selected according to expected level of need for health services, from a random sample of 24,043 individuals aged 18-65 years. Mortality was recorded after 22 years and the results related to those for the individuals not exposed to the factor examined. The results were adjusted for age, expected level of need for health services, total alcohol consumption, gender, body-mass index, tobacco use and social class. RESULTS: Intake of wine once a week or more (compared with intake of wine less than once a week or not at all) was associated with a relative risk ratio of 0.58 for total mortality (95% CI: 0.40-0.84) and a relative risk ratio of 0.49 for mortality from cardiovascular disease (95% CI: 0.27-0.90). The risk reduction seemed to be confined to those consumers of wine who had an intake of less than 140 grams of alcohol per week and consumed the beverage once a week. Ex-drinkers had an increased relative risk ratio in total mortality compared with lifelong abstainers and individuals who consumed less than 50 grams of alcohol per week (relative risk ratio = 2.64; 95% CI: 1.56-4.49). CONCLUSIONS: A low to moderate intake of wine seems, unlike the consumption of distilled spirits and beer, to be associated with reduced total mortality and reduced mortality from cardiovascular disease.

Adolescent↗
PubMed2000

Attendance at cultural events and physical exercise and health: a randomized controlled study.

The aim of this study was to assess the specific biomedico-social effects of participating in cultural events and gentle physical exercise effects apart from the general effect of participating in group activities. This was a randomized controlled investigation using a factorial design, where attending cultural events and taking easy physical exercise were tested simultaneously. The 21 participants, aged between 18 and 74 y were from a simple random sample of people registered as residents in Umeå, a town in northern Sweden. Among the 1000 in the sample, 21 individuals (11 men, 10 women) were recruited into the experiment. Two out of the 21 subjects dropped out and were discounted from our analysis. Nine people were encouraged to engage in cultural activity for a two-month period. Diastolic blood pressure in eight of these nine was significantly reduced following the experiment. There were no marked changes observed in either systolic or diastolic blood pressure in those not required to engage in any form of extra-cultural activity. A decrease in the levels of both adrenocorticotropical hormone (ACTH) and s-prolactin was observed in culturally stimulated subjects, whereas the average baseline s-prolactin level of 7 ng/l for the non-culturally stimulated group was unchanged after the experiment. Physical exercise produced an increase in the high density lipoprotein (HDL) cholesterol level and in the ratio of HDL to LDL (low density lipoprotein). It was concluded that cultural stimulation may have specific effects on health related determinants.

Adolescent↗
PubMed2000

Visiting the cinema, concerts, museums or art exhibitions as determinant of survival: a Swedish fourteen-year cohort follow-up.

The aim of this study was to ascertain the possible influence of attending various kinds of cultural events or visiting cultural institutions as a determinant of survival. A cohort of individuals aged 25-74 years from a random sample were interviewed by trained non-medical interviewers in 1982 and 1983. The interviews covered standard-of-living variables. Our independent variables covered visiting cultural institutions and attendance at cultural events, reading books or periodicals, and music making. The non-response rate was about 25%. The cohort was followed with respect to survival for 14 years up to 31st December 1996. The background covariates that were used for control purposes were age, sex, cash buffer, educational standard, long-term disease, smoking, and physical exercise. Our setting was the Swedish survey of living conditions among the adult Swedish population aged 25-74 years. About 10,609 individuals were interviewed in 1982 and 1983. The outcome measure was survival until 31st December 1996. In all, 916 men and 600 women died during this period. We found a higher mortality risk for those people who rarely visited the cinema, concerts, museums, or art exhibitions compared with those visiting them most often. The significant relative risks ranging between RR 1.14 (95% CI. 1.01-1.31) of attending art exhibitions, and RR 1.42 (CI. 1.25-1.60) of attending museums, when adjusting for the nine other variables. Visits to the cinema and concerts gave significant RR in between. We could not discern any beneficial effect of attending the theatre, church service or sports event as a spectator or any effect of reading or music making. Our conclusion is that attendance at certain kinds of cultural events may have a beneficial effect on longevity.

Adult↗
PubMed1999

A four week residential program for primary health care patients to control obesity and related heart risk factors: effective application of principles of learning and lifestyle change.

OBJECTIVE: To test the short and long-term effectiveness of a four week residential program for primary health care patients to control obesity and related risk factors for cardio-vascular disease (CVD), especially blood pressure (BP). DESIGN: Prospective clinical study, with follow up after 1 and 5 y. SETTING: Vindeln Patient Education Centre, Vindeln, and Department of Social Medicine, University of Umea, Sweden. SUBJECTS: Approximately 2500 individuals, with two or more of the traditional risk factors for CVD, participated in the program. This report describes a subsample of 100 consecutive patients, 52+/-9 y, 53 men, with obesity and/or high BP. INTERVENTION: Four week residential program with lectures and group discussions as well as practical sessions in smaller groups (meal preparations, physical exercise, etc). The patients were followed-up medically in their home area. OUTCOME MEASURES: Weight and blood pressure. RESULTS: Dramatic reductions of weight and, especially, of blood pressure (BP) occurred during the residential weeks, and the reductions were pronounced also after 1 y. After 5 y, the total mean weight among men with initial BMI > or = 30 kg/m2 was still 5 kg lower, and diastolic and systolic BP among those with hypertension was 15 and 20 mm Hg lower, respectively, than before the program. CONCLUSIONS: The full-time participation in the residential program and the enrollment and commitment of the patients may explain the clinical outcome. A level of predisposition greater than that required of most weight- and BP-control programs was confirmed and a great preventive or therapeutic potential was indicated. The study illustrates an effective application of the Precede-Proceed model of health promotion planning.

Blood Pressure↗
PubMed1999

Need for medical care and social services.

Predicting the need for care in the coming decades requires direct measurement of need in birth cohorts, allowing for differentiation with respect to age, generation effects, and the effect of period of time. The method of choice is a simulation of regular contacts with the services, implicit criteria of need for service, and a panel approach with measurement at three points in time.

Aged↗
PubMed1999

Validity of two questions on alcohol use in a health survey questionnaire.

The aim of this study was to investigate whether consumers of high and low levels of alcohol could be identified by two questions about alcohol use in a postal questionnaire survey. A sample of 2,300 persons aged 18 64 years from Stockholm county were sent a masked postal questionnaire comprising 30 questions about their health and functioning. Two questions concerned their alcohol consumption. One year later the subjects underwent a psychiatric health examination, which included an assessment of their alcohol use. The two questions about alcohol consumption identified high alcohol consumers with a relatively high sensitivity and specificity, of 64% and 87%, respectively, and thus are useful for identifying high alcohol consumers in health surveys using questionnaires.

Adult↗
PubMed1998

Personal resources, motives and patient education leading to changes in cardiovascular risk factors.

The purpose of this study was to assess the importance of patients' abilities and motivation to reduce their excess morbidity by benefiting from patient education designed to effect such change. The course consisted of a 4 week full-time program and 4 day refresher course 1 year later. The 295 consecutive patients (60%) who returned for the refresher had substantially reduced their overrisk for stroke or coronary heart disease. Personal ability to accomplish the desired change, such as standard of education, was found to be unimportant, whereas motives like having other people dependent on one were deemed important. One reason why resources such as education were found not to be important could be that the course was lengthy, requiring nearly 5 weeks, and practically oriented.

Adult↗
PubMed1998

Effects of an assessment of needs for medical and social services on long-term mortality: a randomized controlled study.

BACKGROUND: The aim of this study was to investigate the long-term effects of one general health screening on mortality. METHOD: After stratification and randomization of a population of 450,000 inhabitants, two groups were formed, an intervention group of 3064 people and a control group of 29,122 people. From the National Cause of Death Register, data were collected as regards death and causes of deaths for 1970-1990. RESULTS: Multivariate analysis was used to correct for known confounders. We then found no differences between the groups regarding deaths from all causes, cardiovascular diseases, cancer or accidents and poisoning. CONCLUSIONS: One general health screening seems to have little, if any value in preventing fatal diseases.

Adolescent↗